SION Insider Transactions — Page 5
428 retained open-market purchase and sale rows from SEC Forms 3, 4 and 5, newest first. This page shows rows 401–428; provenance stays internal.
| Insider profile | Role | Date | Transaction | Shares | Price |
|---|---|---|---|---|---|
| COULTER JAMES G | TenPercentOwner | 2025-06-27 | Purchase | 60,000.0 | $15.84 |
| WINKELRIED JON | TenPercentOwner | 2025-06-27 | Purchase | 60,000.0 | $15.84 |
| TPG GP A, LLC | TenPercentOwner | 2025-06-27 | Purchase | 60,000.0 | $15.84 |
| COULTER JAMES G | TenPercentOwner | 2025-02-10 | Purchase | 1,125,000.0 | $18.0 |
| WINKELRIED JON | TenPercentOwner | 2025-02-10 | Purchase | 1,125,000.0 | $18.0 |
| TPG GP A, LLC | TenPercentOwner | 2025-02-10 | Purchase | 1,125,000.0 | $18.0 |
| RA Capital Healthcare Fund LP | Director,TenPercentOwner | 2025-02-10 | Purchase | 102,414.0 | $18.0 |
| RA CAPITAL MANAGEMENT, L.P. | Director,TenPercentOwner | 2025-02-10 | Purchase | 102,414.0 | $18.0 |
| Kolchinsky Peter | Director,TenPercentOwner | 2025-02-10 | Purchase | 102,414.0 | $18.0 |
| Shah Rajeev M. | Director,TenPercentOwner | 2025-02-10 | Purchase | 102,414.0 | $18.0 |
| RA Capital Nexus Fund, L.P. | Director | 2025-02-10 | Purchase | 102,414.0 | $18.0 |
| RA Capital Nexus Fund III, L.P. | Director | 2025-02-10 | Purchase | 102,414.0 | $18.0 |
| RA Capital Healthcare Fund LP | Director,TenPercentOwner | 2025-02-10 | Purchase | 1,022,586.0 | $18.0 |
| RA CAPITAL MANAGEMENT, L.P. | Director,TenPercentOwner | 2025-02-10 | Purchase | 1,022,586.0 | $18.0 |
| Kolchinsky Peter | Director,TenPercentOwner | 2025-02-10 | Purchase | 1,022,586.0 | $18.0 |
| Shah Rajeev M. | Director,TenPercentOwner | 2025-02-10 | Purchase | 1,022,586.0 | $18.0 |
| RA Capital Nexus Fund, L.P. | Director | 2025-02-10 | Purchase | 1,022,586.0 | $18.0 |
| RA Capital Nexus Fund III, L.P. | Director | 2025-02-10 | Purchase | 1,022,586.0 | $18.0 |
| Thompson Peter A. | Director | 2025-02-10 | Purchase | 550,000.0 | $18.0 |
| Atlas Venture Fund XI, L.P. | TenPercentOwner | 2025-02-10 | Purchase | 60,000.0 | $18.0 |
| Atlas Venture Associates XI, LLC | TenPercentOwner | 2025-02-10 | Purchase | 60,000.0 | $18.0 |
| Atlas Venture Associates XI, L.P. | TenPercentOwner | 2025-02-10 | Purchase | 60,000.0 | $18.0 |
| Atlas Venture Opportunity Fund II, L.P. | TenPercentOwner | 2025-02-10 | Purchase | 60,000.0 | $18.0 |
| Atlas Venture Associates Opportunity II, LLC | TenPercentOwner | 2025-02-10 | Purchase | 60,000.0 | $18.0 |
| Atlas Venture Associates Opportunity II, LP | TenPercentOwner | 2025-02-10 | Purchase | 60,000.0 | $18.0 |
| Booth Bruce | Director | 2025-02-10 | Purchase | 60,000.0 | $18.0 |
| ORBIMED ADVISORS LLC | Director | 2025-02-10 | Purchase | 550,000.0 | $18.0 |
| OrbiMed Capital GP VIII LLC | Director | 2025-02-10 | Purchase | 550,000.0 | $18.0 |